Question: Did the twinned administrative body of Samarkand begin August 4, 1986?
Paraphrase: About the twinned administrative body of Samarkand, did it started in August 4,1986?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q5753 p:P190 ?s . ?s ps:P190 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1986')) }